Home / 215,262,615.72-322,936,416.96-78,949,180.20

Finding the Fourth Proportional to 215,262,615.72, 322,936,416.96 and 78,949,180.20

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Solution

The fourth proportional to 215,262,615.72, 322,936,416.96 and 78,949,180.20 is: 118,439,355.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,262,615.72 : 322,936,416.96 = 78,949,180.20 : x
  2. Step 2: Convert to fraction form
    215,262,615.72/322,936,416.96 = 78,949,180.20/x
  3. Step 3: Cross multiply
    215,262,615.72x = 322,936,416.96 × 78,949,180.20
  4. Step 4: Simplify right side
    215,262,615.72x = 25,495,565,375,717,376
  5. Step 5: Solve for x
    x = 25,495,565,375,717,376/215,262,615.72
  6. Step 6: Final answer
    x = 118,439,355.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.